= cyclist's tan
Join Date: Jun 2005
Location: the big D in the big T
Posts: 297
Bikes: '82 Miyata 310, '87 Scott Boulder, '87 Schwinn Le Tour, '91 Cannondale SM500, '96 Schwinn Clear Creek, '99 Schwinn MesaGS, '05 Rockhopper
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this is a channel for water to escape when braking in wet conditions. it works pretty well and it maybe even reduces 3 grams of the wheel weight.